A359237 - OEIS

A359237

Number of divisors of 5*n-3 of form 5*k+1.

1, 1, 2, 1, 2, 1, 2, 1, 3, 1, 2, 1, 2, 1, 3, 2, 2, 1, 2, 1, 3, 1, 3, 1, 2, 1, 4, 1, 2, 2, 2, 1, 3, 1, 2, 1, 3, 2, 4, 1, 2, 1, 2, 2, 3, 1, 2, 1, 3, 1, 5, 1, 2, 1, 3, 1, 3, 2, 2, 2, 2, 1, 4, 1, 3, 1, 2, 1, 3, 1, 4, 3, 2, 1, 4, 1, 2, 1, 3, 1, 3, 2, 2, 1, 2, 2, 5, 1, 3, 1

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OFFSET

1,3

COMMENTS

Also number of divisors of 5*n-3 of form 5*k+2.

LINKS

Seiichi Manyama, Table of n, a(n) for n = 1..10000

FORMULA

a(n) = A001876(5*n-3) = A001877(5*n-3).

G.f.: Sum_{k>0} x^k/(1 - x^(5*k-3)).

G.f.: Sum_{k>0} x^(2*k-1)/(1 - x^(5*k-4)).

MATHEMATICA